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POadding items to list view
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  1. POadding items to list view
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    copied!<p>Hi i want to add an item to my array adapter and i use the code below but when i clicked add button i got a force close what am i doing wrong? (i am working with list fragments)</p> <pre><code>public class list extends ListFragment { String[] str = {""}; public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){ final View v = inflater.inflate(R.layout.main, null); Button add = (Button) v.findViewById(R.id.button1); final ArrayAdapter&lt;String&gt; ar = new ArrayAdapter&lt;String&gt;(getActivity(), R.layout.listback_layout, str); final EditText enter = (EditText) v.findViewById(R.id.editText1); add.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { ar.add(enter.getText().toString()); ar.notifyDataSetChanged(); ar.notifyDataSetInvalidated(); } }); setListAdapter(ar); return v; } } </code></pre> <p>Here is The log:</p> <pre><code>12-08 16:50:20.801: E/AndroidRuntime(1832): FATAL EXCEPTION: main 12-08 16:50:20.801: E/AndroidRuntime(1832): java.lang.UnsupportedOperationException 12-08 16:50:20.801: E/AndroidRuntime(1832): at java.util.AbstractList.add(AbstractList.java:404) 12-08 16:50:20.801: E/AndroidRuntime(1832): at java.util.AbstractList.add(AbstractList.java:425) 12-08 16:50:20.801: E/AndroidRuntime(1832): at android.widget.ArrayAdapter.add(ArrayAdapter.java:179) 12-08 16:50:20.801: E/AndroidRuntime(1832): at mr.chag.va.lagar.lagari.mohasebelagari$1.onClick(mohasebelagari.java:27) 12-08 16:50:20.801: E/AndroidRuntime(1832): at android.view.View.performClick(View.java:4084) 12-08 16:50:20.801: E/AndroidRuntime(1832): at android.view.View$PerformClick.run(View.java:16966) 12-08 16:50:20.801: E/AndroidRuntime(1832): at android.os.Handler.handleCallback(Handler.java:615) 12-08 16:50:20.801: E/AndroidRuntime(1832): at android.os.Handler.dispatchMessage(Handler.java:92) 12-08 16:50:20.801: E/AndroidRuntime(1832): at android.os.Looper.loop(Looper.java:137) 12-08 16:50:20.801: E/AndroidRuntime(1832): at android.app.ActivityThread.main(ActivityThread.java:4745) 12-08 16:50:20.801: E/AndroidRuntime(1832): at java.lang.reflect.Method.invokeNative(Native Method) 12-08 16:50:20.801: E/AndroidRuntime(1832): at java.lang.reflect.Method.invoke(Method.java:511) 12-08 16:50:20.801: E/AndroidRuntime(1832): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 12-08 16:50:20.801: E/AndroidRuntime(1832): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 12-08 16:50:20.801: E/AndroidRuntime(1832): at dalvik.system.NativeStart.main(Native Method) </code></pre>
 

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